class Summarizer:
    def summarize(self, df, fc, query):
        last_actual = df.iloc[-1].to_dict()
        forecast_tail = fc.tail(5)[["ds", "yhat"]].to_string(index=False)

        summary = (
            f"🔍 **User asked:** {query}\n\n"
            f"📊 **Last actual data:**\n{last_actual}\n\n"
            f"📈 **Forecast for next steps:**\n{forecast_tail}\n\n"
            f"📌 Summary: Based on the recent trends, the forecast suggests continued fluctuation or growth depending on recent values."
        )

        return summary